"I said a few months back I didn't understand why the film was called Amanda Knox when my daughter was the victim," she told the Sun.
The trailer shows Knox, a 20-year-old student from Seattle at the time, portrayed by Panettiere, and Sollecito in a steamy bed scene. At one point the Italian prosecutor states ominously, "Under the angel face, she is capable of anything."
The dark view of Knox, now 23, has upset her family as well. Sollecito's lawyers have also denounced the movie.
Knox was visited today by Mellas and her best friend Madison Paxton, who has since moved to Italy.
"Amanda had her hour outside right before her visit," Mellas told ABC News. "She was very upbeat and happy. In spite of her situation, she was quite upbeat. The weather is a good distraction for her." It was a sunny day in Perugia yesterday with the temperatures in the 60s.
Knox has been reported to be depressed over her long incarceration for a crime that she insists she did not commit.
John Kercher has lashed out before about the attention that Knox has received. When she began her appeal last year wrote in a British newspaper that he regretted that the woman convicted of killing his daughter had become a "minor celebrity."
Besides the movie, several books have been written about Knox.